Differential Rate Law (v = k[A]^m[B]^n)
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v = k[A]^m[B]^n ...
What each symbol means
| Symbol | What it stands for |
|---|---|
| k | Rate constant (units depend on overall order) |
| v | Instantaneous rate of reaction (concentration per time, e.g. mol L⁻¹ s⁻¹) |
| m, n | Partial orders with respect to A, B (determined experimentally, not from stoichiometry) |
| [A], [B] | Molar concentrations of reactants |
When to use this
Valid for elementary steps the orders match molecularity; for overall reaction orders are empirical. Temperature fixed when comparing k.